
24
4.9 Floppy Disk Drive Connector
The HS-4701 uses a standard 34-pin header connector,
FDC1
, for
floppy disk drive connection. A total of two FDD drives may be
connected to
FDC
at any given time.
FDC1: FDD Connector
PIN
Description
PIN
Description
1
GND
2
RWC#
3
GND
4
N/C
5
GND
6
DS1#
7
GND
8
Index#
9
GND
10
MOA#
11
GND
12
DSB#
13
GND
14
DSA#
15
GND
16
MOB#
17
GND
18
DIR#
19
GND
20
STEP#
21
GND
22
WD#
23
GND
24
WE#
25
GND
26
TRACK0#
27
GND
28
WP#
29
N/C
30
RDATA#
31
GND
32
HEAD#
33
N/C
34
DSKCHG#
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
RWC#
N/C
DS
1#
INDE
X#
MO
A#
DS
B#
DS
A#
MO
B#
DIR#
ST
EP
#
WD
#
’
WE
#
TRACK0#
WP
#
RDA
TA#
1
2
34
33
GND
N/C
GND
N/C
HE
AD#
DS
KCHG#
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